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The TBE is usually made as a 5x solution. Explain what volumes of 5x TBE and water are required to make 500mls of a 0.5x solution which is frequently used in electrophoresis?
Hydrogen is collected over water at .975 atm and 28 degrees Celsius. What is the partial pressure of H2?
If the Ka of a monoProtic weak acid is 5.3*10^6 what is the Ph of 0.15 M solution of this weak acid
Write the structure of the carbocation formed by the protonation of C-2 or C-3 to verify that it is not allylic and therefore not as stable as the one formed by the protonation of C-1 or C-4.
Calculate the vapor pressure of water, in torr, above a solution prepared by dissolving 65.40 g of ZnCl2 in 445.0 g of water at 323.0 K. The vapor pressure of pure water at 323.0 K is 92.50 torr.
The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted
Explain how many neutrons are emitted when a californium-249 nucleus (Z=98) is bombarded with a carbon-12 nucleus to produce a >257/104 Rf
An alkyne of six carbon atoms gives the same single product in its reaction either with BH3 in THF followed by H2O2 /OH-, or with H2O/Hg2 /H3O . Draw the structure of the alkyne (containing only carbon and hydrogen atoms).
The contents of the tank are transferred without loss to an evacuated 55 L tank in scold room where the temperature is 4 degree C . What is the pressure in the tank ?
Consider the chemical species IF5 and IF4+
How many mL of 0.425 M NaOH are needed to react completely with 25.0 mL of 0.250 M Fe Cl3 solution. FeCl3 aq + 3NaOH arrow to Fe(OH)3 aq +3NaCl aq
assume you are performing the calibration step of experiment 8 andyou begin with 50 g of water at 20 oc and 50 g of
What accounts for the structural differences between diamond and graphite since both have the same atomic composition
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